• Code: 948.xx
• Description: Failed engine card—pel clock check failed.
• Remedy: Replace the controller board

• Code: 950.xx
• Description: NVRAM mismatch failure—mismatch between controller board EEPROM and control panel mirror. ".xx" codes: • 00-29— mismatch between system and mirror • 30-60—mismatch between secure and system
• Remedy: Warning—Potential Damage: When replacing any of the following components: • Control panel assembly • Controller board assembly Replace only one component at a time. Replace the required component and perform a POR before replacing a second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never replace two or more of the components listed above without a POR after installing each one or the printer will be rendered inoperable. Never install and remove components listed above as a method of troubleshooting components. Once a component has been installed in a machine, it can not be used in another machine. It must be returned to the manufacturer.
  Step 1 Check the control panel assembly. Was the control panel assembly recently replaced? Go to step 3. Go to step 2.
  Step 2 Check the controller board assembly. Was the controller board assembly recently replaced? Go to step 4. Contact next level of support.
  Step 3 Replace the current control panel assembly with the control panel assembly. Go to “Control panel assembly removals”. Does the error remain? Go to step 5. The problem is solved.
  Step 4 Replace the current controller board assembly with the original controller board assembly. Go to “Controller board removals”. Does the problem continue? Go to step 6. The problem is solved.
  Step 5 Replace the original control panel assembly with a new and not previously installed control panel assembly. Does the error continue? Contact the next level of support. The problem is solved
  Step 6 Replace the original control panel assembly with a new and not previously installed control panel door assembly. Does the error continue? Contact the next level of support. The problem is solved.

• Code: 952.xx
• Description: Service NVRAM Failure A recoverable MVRAM Cyclic Redundancy Check (CRC) error occurred. n is the offset at which the error occurred.
• Remedy: Performing a POR will clear this error.

• Code: 953.xx
• Description: Service NVRAM Failure NVRAM chip failure with mirror.
• Remedy: Replace the controller board.

• Code: 954.xx
• Description: Service NVRAM Failure The NVRAM chip failure with controller part.
• Remedy: • POR the printer. • If the problem persists, then replace the controller board.

• Code: 955.xx
• Description: Service Code CRC <loc> The Code ROM or NAND flash failed the Cyclic Redundancy Check (CRC) check or the NAND experienced an uncorrectable multi-bit failure. <loc> indicates the source of the failure and has one of the following values: • CRC Failure: The source is a failing package indicated by Pn where n is the package number. This error could occur on a controller with ROM or NAND flash and could occur as a result of the CRC check done when the machine is powered on. The range of package numbers is from 0 to 15. • Error Correction Code (ECC) Failure: The source is a failing page indicated by Bn where “n” is the page number. This error occurs only if a multi-bit failure is detected during the ECC execution. Single bit failures will be corrected automatically and will not result in a service error. The range of page numbers is from 0 to 1023.
• Remedy: • POR the printer. • If the problem persists, then replace the controller board.

• Code: 956.xx
• Description: Service Controller Board Controller board failure. Processor failure. Check on .02 for fan error.
• Remedy: • POR the printer. • If the problem persists, then replace the controller board.

• Code: 957.xx
• Description: Service Controller Board Controller board failure. ASIC failure.
• Remedy: • POR the printer. • If the problem persists, then replace the controller board.